(a) Surgical methods of contraception prevent gamete formation.

Correction

Surgical methods of contraception prevent the flow of gamete during intercourse.

(b) All sexually transmitted diseases are completely curable.

Correction

Some of the sexually transmitted diseases are curable if they are detected early and treated properly. AIDS is still an incurable disease.

(c) Oral pills are very popular contraceptives among the rural women.

Correction

Oral pills are very popular contraceptives among urban women.

(d) In E. T. techniques, embryos are always transferred into the uterus.

Correction

In embryo transfer technique, 8 celled embryos are transferred into the fallopian tube while more than 8 celled embryos are transferred into the

uterus.